Appliance Electricity Cost Calculator
Estimate how much electricity your home appliances consume and what they cost to run. Enter the device wattage, daily usage hours, and your electricity rate to get accurate kWh and cost calculations.
Electricity Expenses
How to use
- Select a home appliance or enter its name manually.
- Enter the device power in watts or kilowatts.
- Set the average daily usage hours.
- Choose the number of days for calculation.
- Enter your electricity rate (per kWh).
- Get the estimated consumption and running cost.
What does the calculator compute?
- Energy consumption in kWh per day, month, or year.
- Electricity cost for running each appliance.
- Comparison of devices by energy use.
- Potential savings from reducing usage time.
Calculation formula
Consumption (kWh) = Power (kW) × Time (hours). For example, a 2 kW kettle running for 15 minutes consumes 2 × 0.25 = 0.5 kWh.
Cost = Consumption (kWh) × Rate (per kWh). At a rate of $0.15/kWh: 0.5 × 0.15 = $0.075 per boil.
Typical appliance consumption
- Electric kettle 2 kW, 15 min/day → 0.5 kWh/day.
- TV 100 W, 5 h/day → 0.5 kWh/day.
- Washing machine 2 kW, 1 h → 2 kWh per cycle.
- Space heater 1.5 kW, 4 h/day → 6 kWh/day.
- Refrigerator 150 W, 8 h/day (compressor) → 1.2 kWh/day.
Tips to reduce electricity costs
- Use energy-efficient appliances rated A++ or higher.
- Unplug devices from standby mode.
- Reduce usage time of high-power appliances.
- Monitor actual consumption with smart meters.
- Compare tariffs and switch to a better energy plan.
Frequently Asked Questions
How do I calculate appliance electricity usage?
Multiply the appliance wattage in kilowatts by the hours of operation. For example, 2 kW × 0.5 h = 1 kWh.
How do I find the running cost of an appliance?
Multiply the kWh consumption by your electricity rate. At $0.15/kWh: 1 kWh × 0.15 = $0.15 per hour.
Which home appliance uses the most electricity?
Space heaters, water boilers, air conditioners, and electric stoves typically consume the most. Total usage depends on both wattage and hours of operation.
Why does actual usage differ from calculated?
Many appliances cycle on and off automatically or vary power output (e.g. fridges, ACs). So the calculator gives an estimate based on average usage.
What is the calculation methodology?
The calculator uses: kWh = Watts × Hours ÷ 1000. Cost = kWh × Rate. Results are estimates based on the inputs provided.
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